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With the help of the good Doctor, Wong began modding his scooter back in '07, and even had a GY6 swap done by Killer Scooter early on; well before the Ruckus phenomenon ever got under way.
The lubrication system in a scooter’s 139QMB 4T engine is crucial to maintaining the engine’s health and performance. Unlike older two-stroke engines, the 139QMB 4T engine uses a four-stroke ...
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